Assessment of Water Resources Mixing in Karstic Aquifers: A Case Study of Garu Karstic Springs, East of Khuzestan

Authors

1 Department of Geology, Faculty of Earth Scinces, Shahid Chamran University of Ahvaz

2 Department of Geology, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz

Abstract

     Mixing is one of the most important factors in the altering of the groundwater quality. The presence of various components in the Zagros zone such as oil brine, waters affected by evaporative formations such as Gachsaran has caused the mixing process to play a fundamental role in the quality of these water resources. Garu Spring in the Masjed Soleiman area can be used as an indicator to investigating the mechanism of groundwater resources mixing in the Zagros zone. Most of the Asmari anticline groundwater discharged by this spring, unfortunately, due to mixing with saline water in the northwest of Asmari anticline, quality of this huge resource of fresh water has reduced. In this research, we tried to investigate the mixing of fresh and saline water using hydrochemical studies and hydrogeochemical combination diagrams and methods. Chemical analysis of the main elements of the 20 samples and TOC of the 10 samples of groundwater was investigated. Br/Cl ratio and Combination diagrams, which have obvious linear trend between the sodium and chlorine, shows that fresh and saline water are mixed. Also, TOC values indicate contamination of Garu saline spring by organic substances. Phreeqc software results to determine the percentage of the area, Shows that salinity of karstic aquifer of Asmari anticline and Garu springs have several reasons, including dissolution of evaporative Gachsaran formation and oilfield brine in the area. The main reason for salinity in the wet season is an influx of high volume Temby river water, and in the dry season is mixing with oil brines.
 

Keywords

References

روحی، ح،. کلانتری، ن،. محمدی بهزاد، ح،.  دانشیان، ح،. پاییز 92، شماره 9. بررسی هیدروژئولوژیکی و هیدروژئوشیمیایی منابع آب زیرزمینی منطقه الباجی. مجله زمین‌شناسی کاربردی پیشرفته،9-1.
زراسوندی، ع.، و میرزایی، ی. (1387). بررسی آلودگی‌های نفتی چشمه‌های آب میدان نفتی مسجدسلیمان. گزارش سازمان آب و برق خوزستان.
مظفری زاده، ج.، و سجادی، ز. سال ششم، بهار 1392. بررسی علل شوری و نفوذ آب‌شور رودهای دالکی . حله به آبخوان برازجان. مجله مهندسی منابع آب، 78-69
میرزایی، س.، زراسوندی، ع.، اورنگ، م. (زمستان 94، شماره 18. تأثیر زمین‌شیمیایی مخازن نفتی آسماری بر منابع آب کارستی مسجدسلیمان. مجله زمین‌شناسی کاربردی پیشرفته،14-1.
ناصری، ح ، و علیجانی، ف. (1384). عدم تطابق ژئومورفولوژی و هیدروژئولوژی کارست تاقدیس آسماری. مجموعه مقالات نهمین همایش انجمن زمین‌شناسی ایران، دانشگاه تربیت‌معلم تهران، 80-71.
نخعی، م.، ودیعتی، م، و میر عربی، ع. (1388). منشأ شوری آب زیرزمینی دشت شاهرخت خراسان جنوبی). مجموعه مقالات دومین کنفرانس آب ایران، دانشگاه آزاد اسلامی بهبهان).
Zarei M, Raeisi EJ, Merkel B, Kummer NA (2012) Identifying sources of salinization using hydrochemical and isotopic techniques, Konarsiah, Iran, Environmental earth science, volume 70, Issue 2, 587-604 p.
Krieger RA, Hendrickson GE (1960) Effects of Greensburg oil-field brines on the streams, wells, and springs of the Upper Green River: Kentucky Geological Survery, Series X, Report of Investigations No.2,36 p.
Freeman J (2007) The use of bromin and chloride mass rations to differentitate salt dissolution and formation brines in shallow groundwater of the Western Canadian Sedimentary Basin, Hydrogeology Journal, 15: 1377-1385 p.
GENE COLLING, A. (1975). Geochemistry of Oilfield Water. Oklahoma, U.S.A.: ELSEVIER Scientific Publishing Company.
Khaska, M., Le Gal La Salle, C., Lancelot , J., team, A., & Mohamad, A. (2013). Origin of groundwater salinity (current seawater vs. saline deep water) in a coastal karst aquifer based on Sr and Cl isotopes. Case study of the La. Applied Geochemistry, 212-227 p.
Mast VA (1982) The use of ionic mixing curves in differentiating oil-field brine in a fresh-water aquifer: presented at the American Water Resources Association, The University of Texas at Austin, December 3, 1982, 16 p.
Whittemore DO, Pollock LM (1979) Determination of salinity sources in water resources of Kansas by minor alkali metal and halide chemistry: Kansas Water Resources Research Institute, Consultant’s report to Office of Water Research and Technology, U.S. Department of the Interior, Washington, D.C., 37 p.
Whittemore DO (1984) Geachemical identification of salinity sources, in French, R. H., Salinity in watercourses and reservoirs: Proceedings of the 1983 International Symposium on State-of-the-Art Control of Salinity, Salt Lake City, Utah, 505-514 p.
Richter BC, Kreitler C (1991) Identification of sources of groundwater salinization using geochemical techniques, U.S. Environmental Protection Agency document no. 600/2-91/064, 259 p.
Advanced Applied Geology
Volume 7, Issue 2
July 2017
Pages 65-75

Files

Share

How to cite

Statistics